<template>
  <view
    :style="{width:systemInfo.width+'rpx', height: systemInfo.height+'rpx','background-color': bgcolor,position:'absolute', left:'0', top:'0','z-index':'9998', overflow: 'hidden'}">
    <view v-for="(item,index) in skeletonRectLists" :key="index" :class="{chiaroscuro:loading == 'chiaroscuro'}"
      :style="{width:item.width+'rpx',height: item.height+'rpx','background-color': 'rgb(194, 207, 214)',position: 'absolute',left:item.left+'rpx',top: item.top+'rpx'}">
    </view>
    <view v-for="(item,index) in skeletonCircleLists" :key="index" :class="{chiaroscuro:loading == 'chiaroscuro'}"
      :style="{width: item.width+'rpx',height: item.height+'rpx','background-color': 'rgb(194, 207, 214)', 'border-radius':item.width+'rpx',position: 'absolute', left: item.left+'rpx', top: item.top+'rpx'}">
    </view>

    <view class="gg-spinbox" v-if="loading == 'spin'">
      <view class="gg-spin"></view>
    </view>
  </view>
</template>
<script>
export default {
  name: "",
  props: {
    bgcolor: {
      type: String,
      default: "#FFF"
    },
    selector: {
      type: String,
      default: "skeleton"
    },
    loading: {
      type: String,
      default: "spin"
    }
  },
  data() {
    return {
      loadingAni: ["spin", "chiaroscuro"],
      systemInfo: {},
      skeletonRectLists: [],
      skeletonCircleLists: []
    }
  },
  created: function () {

  },
  mounted: function () {

  },
  methods: {
    attached: function () {
      //默认的首屏宽高，防止内容闪现
      const systemInfo = uni.getStorageSync("cache_system_info");
      (this.systemInfo = {
        width: systemInfo.windowWidth,
        height: systemInfo.windowHeight
      }),
        (this.loading = this.loadingAni.includes(this.loading) ?
          this.loading :
          "spin");
    },
    rectHandle: function () {
      const that = this;
      //绘制不带样式的节点
      uni.createSelectorQuery()
        .selectAll(`.${this.selector}-rect`)
        .boundingClientRect()
        .exec(function (res) {
          that.skeletonRectLists = res[0];
        });
    },

    radiusHandle: function () {
      const that = this;
      uni.createSelectorQuery()
        .selectAll(`.${this.selector}-radius`)
        .boundingClientRect()
        .exec(function (res) {
          that.skeletonCircleLists = res[0];
        });
    }
  },
  ready() {
    const that = this;

    //绘制背景
    uni.createSelectorQuery()
      .select(`.${this.data.selector}`)
      .boundingClientRect()
      .exec(function (res) {
        that.systemInfo.height = res[0].height + res[0].top;
        //绘制矩形
        that.rectHandle();

        //绘制圆形
        that.radiusHandle();
      });
  }
};
</script>
<style>
.spinbox {
  position: fixed;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  width: 100%;
  z-index: 9999;
}

.spin {
  display: inline-block;
  width: 64rpx;
  height: 64rpx;
}

.spin:after {
  content: " ";
  display: block;
  width: 46rpx;
  height: 46rpx;
  margin: 1rpx;
  border-radius: 50%;
  border: 5rpx solid #409eff;
  border-color: #409eff transparent #409eff transparent;
  animation: spin 1.2s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.chiaroscuro {
  width: 100%;
  height: 100%;
  background-color: rgb(194, 207, 214);
  animation-duration: 2s;
  animation-name: blink;
  animation-iteration-count: infinite;
}

@keyframes blink {
  0% {
    opacity: 0.4;
  }

  50% {
    opacity: 1;
  }

  100% {
    opacity: 0.4;
  }
}

@keyframes flush {
  0% {
    left: -100%;
  }

  50% {
    left: 0;
  }

  100% {
    left: 100%;
  }
}

.shine {
  animation: flush 2s linear infinite;
  position: absolute;
  top: 0;
  bottom: 0;
  width: 100%;
  background: linear-gradient(
    to left,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.85) 50%,
    rgba(255, 255, 255, 0) 100%
  );
}
</style>
